Problem	photo
User	om2024
Submission Time	2025-01-16 17:24:50
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

photo.cpp: In function ‘int main()’:
photo.cpp:22:24: error: expression cannot be used as a function
22 | check[vec[r].second()] +=1;
| ^